Wikipedia:Manual of Style (infoboxes)

An infobox is a panel, usually in the top right of an article, next to the lead section (in the desktop view), or at the very top of an article (in mobile view), that summarizes key features of the page's subject. Infoboxes may also include an image, and/ or a map.

Infoboxes generally use the software feature. (It is possible to hand-code an infobox using table markup, but this loses the advantages of standardisation and reusability.) The templates have parameters; to work properly, the parameter values have to be specified when the template is inserted in the page. This allows each infobox to show information relevant to the article subject, while requiring only a minimal amount of coding within each article.

When considering any aspect of infobox design, keep in mind the purpose of an infobox: to summarize (and not supplant) key facts that appear in the article (an article should remain complete with its summary infobox ignored). The less information it contains, the more effectively it serves that purpose, allowing readers to identify key facts at a glance. Of necessity, some infoboxes contain more than just a few fields; however, wherever possible, present information in short form, and exclude any unnecessary content. Avoid links to sections within the article; the table of contents provides that function.

As with any guideline, there will be exceptions where a piece of key specialised information is difficult to integrate into the body text, but where that information may be placed in the infobox. Prominent examples include the ICD codes in {{}} and most of the parameters in {{}}.

Using an infobox also makes the data within it available to third party re-users such as DBpedia in a granular, machine readable format, often using microformats.

The recommended process for creating an infobox template is simply to begin, and to gather as many requirements as possible. Test the base format for a new template as a static table first, then once consensus is reached, migrate it into template format. The template should be reviewed before being used extensively in articles in case the template or defined parameters need modification to minimize re-works. If new fields and parameters are added, articles must be updated to reflect the new requirements. If parameters are renamed or removed, many articles will likely be unaffected, since extraneous parameters are ignored.

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